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onsemi NCV3064DR2G
- Part No.:
- NCV3064DR2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCV3064DR2G.pdf
- Description:
- IC REG BUCK BOOST ADJ 1.5A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,176
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Product details
Overview
NCV3064DR2G from onsemi is an automotive-grade monolithic switching regulator IC designed for step-down, step-up, and voltage-inverting DC-DC converter applications. It integrates a 1.5 A Darlington output switch, 150 kHz oscillator, precision 1.25 V reference (±1.5%), cycle-by-cycle current limiting, and logic-level ON/OFF shutdown control. It operates from 3.0 V to 40 V input and supports high-power LED lighting and battery charger designs.
For engineers reviewing the NCV3064DR2G datasheet, pinout, applications, or equivalent options, key selection criteria include its −40 °C to +125 °C automotive temperature range, SOIC-8 package with exposed pad, 200 mV current-sense threshold, thermal shutdown at 160 °C, and compatibility with external PMOS transistors for higher output current.
Technical Context
The NCV3064DR2G implements a hysteretic gated-oscillator architecture that regulates output voltage without dominant-pole loop compensation. Its timing capacitor (Pin 3) sets oscillator frequency via a 1:6 internal charge/discharge current ratio, yielding typical 150 kHz operation with CT = 2.2 nF.
It features dual comparator-based control: one monitors feedback voltage against a 1.25 V reference (Pin 5), while another senses peak switch current via a sense resistor (Pin 7) with 200 mV threshold. The Darlington output stage (Pins 1 & 2) delivers up to 1.5 A with <1.3 V saturation voltage at 1.0 A and 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 40 V - supports wide-input industrial and automotive power rails without pre-regulation. |
| Output Switch Current | 1.5 A - enables direct drive of medium-power converters without external MOSFETs in basic configurations. |
| Oscillator Frequency | 150 kHz (typ.) - balances efficiency, EMI, and passive component size for cost-sensitive designs. |
| Reference Voltage | 1.25 V ±1.5% - provides stable feedback setpoint for accurate output regulation across temperature. |
| Current Sense Threshold | 200 mV (typ.) - defines peak switch current limit; used with Rsense to scale protection point (e.g., 0.133 Ω for 1.5 A). |
| Standby Current | 100 µA (typ.) - ensures ultra-low quiescent draw during ON/OFF pin low-state shutdown. |
| Thermal Shutdown | 160 °C with 10 °C hysteresis - protects die under overload or poor heatsinking without latch-up. |
Pinout & Package
NCV3064DR2G is housed in a Pb-free SOIC-8 NB (Case 751-07) package with exposed thermal pad (EP) requiring connection to GND on PCB per datasheet Figure 3. Pin 4 is GND; Pin 8 is ON/OFF; Pin 1 is Switch Collector; Pin 2 is Switch Emitter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SWC | Switch Collector | High-current output node of internal Darlington transistor; connects to inductor/rectifier in buck/boost/inverting topologies. |
| 2 - SWE | Switch Emitter | Emitting terminal of Darlington switch; referenced to GND in most configurations; used with Rsense for current sensing. |
| 3 - CT | Timing Capacitor | Oscillator timing node; sets switching frequency via external capacitor (e.g., 2.2 nF → 150 kHz). |
| 4 - GND | Ground | Common return for all internal circuits and EP pad; must be low-impedance for stability and thermal performance. |
| 5 - COMP | Comparator Inverting Input | Feedback node for output voltage regulation; connected to resistor divider from VOUT to set target output. |
| 6 - VCC | Voltage Supply | Primary power input (3–40 V); powers internal bias, oscillator, and gate drive; also supplies external components. |
| 7 - Ipk | Peak Current Sense | Monitors voltage drop across external Rsense to trigger cycle-by-cycle current limiting at ~200 mV. |
| 8 - ON/OFF | Enable/Shutdown Control | Logic-level input: >2.4 V (typ.) enables operation; ≤1.0 V (typ.) disables switching and reduces ICC to ≤100 µA. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | NCV prefix denotes AEC-Q100 compliance and −40 °C to +125 °C operating junction range. |
| Integrated Darlington switch | 1.5 A rated output with <1.3 V VSWCE at 1.0 A enables compact, low-component-count converters. |
| Adjustable output voltage | Configurable via external resistor divider on COMP pin - supports buck, boost, and inverting topologies. |
| Low-power shutdown | ON/OFF pin reduces supply current to ≤100 µA, enabling battery-backed or always-on systems with minimal drain. |
| Robust protection suite | Includes cycle-by-cycle current limiting, thermal shutdown (160 °C), and ESD/latch-up hardening per AEC-Q100. |
Applications
| Automotive Infotainment Power Supply | Industrial Sensor Node DC-DC Converter |
|---|---|
Use Scenario: Generating stable 3.3 V or 5 V rail from 12 V vehicle battery for MCU, display, and audio codecs under cold-crank and load-dump conditions. IC Role / Device Role / Timing Role: Primary switching regulator implementing step-down topology with ON/OFF controlled by microcontroller for sleep/wake sequencing. Use Value: −40 °C to +125 °C rating ensures reliability across engine bay and cabin environments; 40 V max VCC withstands load dump transients. |
Use Scenario: Converting 24 V industrial bus to isolated 12 V or 5 V for analog front-end, ADC, and wireless transceiver in factory automation nodes. IC Role / Device Role / Timing Role: Core DC-DC controller in non-isolated buck configuration, supporting variable load and wide input tolerance. Use Value: 1.5 A output capability and adjustable feedback enable flexible rail generation; thermal shutdown prevents field failure during overtemperature events. |
| LED Driver for Commercial Lighting | Portable Battery Charger Management |
Use Scenario: Driving high-brightness LED strings in streetlights or signage using constant-current configuration with external sense resistor. IC Role / Device Role / Timing Role: Constant-voltage or constant-current regulator in buck or boost mode, with ON/OFF dimming control via PWM. Use Value: 150 kHz fixed-frequency operation simplifies EMI filtering; 200 mV current-sense threshold allows precise LED current setting. |
Use Scenario: Charging single-cell Li-ion or multi-cell NiMH batteries from USB or wall adapter inputs with programmable charge voltage/current. IC Role / Device Role / Timing Role: Adjustable-output switching regulator providing regulated charging voltage; ON/OFF pin enables charge enable/disable from host MCU. Use Value: Wide 3–40 V input accommodates various adapters; standby current <100 µA minimizes self-discharge during storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2574N-5.0 | Fixed 5.0 V output; 0.5 A switch; 52 kHz frequency; no ON/OFF pin; TO-220/TO-263 packages only. | Limited to fixed-output, lower-current applications; lacks shutdown and automotive temp range. | Select when cost and simplicity outweigh need for adjustability, high current, or automotive qualification. |
| MP1584EN-LF-Z | 40 V input; 3 A switch; 1.5 MHz frequency; integrated soft-start; requires external compensation; SOIC-8. | Higher frequency enables smaller magnetics; higher current supports more demanding loads; not AEC-Q100 qualified. | Select for space-constrained, high-efficiency designs where automotive qualification is not required. |
Compared with LM2574N-5.0 and MP1584EN-LF-Z, the NCV3064DR2G uniquely combines automotive temperature range, 1.5 A capability, adjustable output, and logic-level shutdown in a standard SOIC-8 - making it optimal for cost-sensitive, thermally demanding embedded power supplies.
Availability
NCV3064DR2G is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor nodes, commercial LED lighting, and portable battery charger designs requiring stable component supply and long-term lifecycle support.
Supply support for NCV3064DR2G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, and cloud power markets.
The NCV3064DR2G belongs to onsemi's NCP/NCV3064 series of monolithic DC-DC switching regulators, designed specifically for robust, low-component-count step-down, step-up, and inverting power conversion in harsh-environment applications.
FAQ
What is the maximum input voltage rating for the NCV3064DR2G?
The NCV3064DR2G supports a maximum input voltage of 42 V on the VCC pin (Pin 6) and SWC pin (Pin 1), as specified in the Absolute Maximum Ratings table. This allows safe operation under automotive load-dump conditions up to 40 V transient, provided proper input clamping and layout practices are followed. The device remains functional across its full 3.0 V to 40 V operating range.
Does the NCV3064DR2G require external compensation components?
No, the NCV3064DR2G does not require external compensation components. Its hysteretic gated-oscillator architecture eliminates the need for dominant-pole loop compensation, enabling stable operation with only the timing capacitor (CT), feedback resistors, and standard power-stage passives. This simplifies design and reduces bill-of-materials count compared to voltage-mode controllers.
Can the NCV3064DR2G be used in a voltage-inverting configuration?
Yes, the NCV3064DR2G is explicitly designed for voltage-inverting applications, as confirmed in the datasheet title and Applications section. Figure 24 shows a typical inverting schematic using the same IC. The internal Darlington switch, oscillator, and comparator allow straightforward implementation of inverting topologies with appropriate external component selection and grounding arrangement.
What is the purpose of the exposed pad (EP) on the NCV3064DR2G SOIC-8 package?
The exposed pad (EP) on the NCV3064DR2G SOIC-8 package is a thermal pad that must be soldered to a GND-connected copper area on the PCB per datasheet Figure 3. It significantly improves thermal resistance (RJC = 45 °C/W), enabling reliable operation at full 1.5 A load in ambient temperatures up to +125 °C. Leaving it unconnected degrades thermal performance and risks thermal shutdown.
How does the ON/OFF pin function in the NCV3064DR2G?
The ON/OFF pin (Pin 8) of the NCV3064DR2G enables logic-level shutdown: pulling it below ~1.0 V (or leaving it floating) disables switching and reduces supply current to ≤100 µA; pulling it above ~2.4 V enables normal operation. It accepts up to 25 V input and supports PWM dimming or microcontroller-controlled power sequencing without external level-shifting circuitry.
NCV3064DR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 40V
- Current - Output:
- 1.5A (Switch)
- Frequency - Switching:
- 150kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
NCV3064DR2G FAQ
1.How can I place an order for NCV3064DR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV3064DR2G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for NCV3064DR2G reliable?
The price and inventory of NCV3064DR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV3064DR2G is usually 5 days.
3.What payment methods are accepted for NCV3064DR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV3064DR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV3064DR2G?
NCV3064DR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV3064DR2G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for NCV3064DR2G?
For technical support, including NCV3064DR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV3064DR2G requirements.
6.How does Aetrix verify that NCV3064DR2G is sourced from the original manufacturer or authorized distributors?
All NCV3064DR2G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that NCV3064DR2G meets industry standards.
7.What is the process for return or replacement of NCV3064DR2G?
All NCV3064DR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV3064DR2G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The NCV3064DR2G part is unused and in its original packaging.
Return procedure for NCV3064DR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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